|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Ungulata - Kentriodontidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|E. H. Colbert 1944||A small cetacean showing a combination of both delphinid and ziphiid characters. Short, deep rostrum, with an open mesirostral groove. Palate flat and rather broad. A series of well-developed teeth in both maxilla and mandible; these teeth set in well-defined sockets. Skull but slightly assymetrical. Periotic similar to that in the Delphinidae, but tympanic typically ziphioid, with a strong external vertical fold. Small pterygoids, with external reduplication of the bones to form "pterygoid pockets" as in the Delphinidae. Posterior portion of mandibular ramus strongly convex as in the Ziphiidae. Cervicals free. Neural arches of dorsals and lumbars high, and spines inclined backward; centra of vertebrae elongated. Manubrium of sternum strongly bifid as in the Ziphiidae. Number of ribs not certainly determinable. Scapula ziphioid, similar to that of Mesoplodon, with three strong external ridges, including the scapular spine, and large, well-developed acromion and coracoid. Radius and ulna short and distally expanded, as in the Delphinidae. Carpus typically delphinid, with hexagonal bones, particularly the lunar. Dig- its unknown.|